PLATE XXXV 
Fig. 1. Kionoceras trentonense Sp. nov. Lateral view, magnified 27 /lO. The 
alternation in size of the vertical riblets is shown best by the left half of the 
figure. From the original specimen represented by fig. 2 b, c, on pi. 56 of Pal. 
New York, 1, 1847. From the middle Trenton at Middleville, New York. 
Fig. 2. Kionoceras sp. Lateral view, magnified 27 /lO. From the original 
specimen represented by fig. 3 on pi. 56 of Pal. New York, 1, 1847. From the 
lower shaly strata of the Trenton at Middleville, New York. 
Fig. 3, Actinoceras parksi Sp. nov. View of a natural exposure of the interior 
of the siphuncle, showing on the left a polished vertical section exposing the 
septa, the long septal necks, and the relatively short connecting rings. From 
the Lower Rapids on the Shamattawa River, in northern Manitoba, west of 
Hudson Bay, in limestone of Ordovician age. No. 308 S, in the Royal Ontario 
Museum of Paleontology at Toronto. 
